after ubuntu upgrading, it is need to install guest addtions again.
uninstall guest addtions I donot know now, I will add this part later
install
1
sudo apt-get install virtualbox-guest-dkms virtualbox-guest-utils virtualbox-guest-x11
- restart VBox
uninstall guest addtions I donot know now, I will add this part later
install
1
sudo apt-get install virtualbox-guest-dkms virtualbox-guest-utils virtualbox-guest-x11